Symptoms of the defective petrol pump + solutions tuby.me

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1. Symptoms pump defective gasoline? Discover the causes, the most common mistakes and how to remedy the problem.

The fuel pump is one of the most important parts, being responsible for the fuel supply of the system and maintaining its normal pressure. Although the mechanical and electronic pumps work on different principles, the symptoms of the defect are similar to both types of pumps.

Symptoms of defective fuel pump:

• The car does not start, or often stops: if the petrol pump dies, it has no one to send fuel to the engine and cannot start and if the flow is stopped, the car will stop. There are a variety of causes for which the engine does not start. To identify if it is the fault of the petrol pump, the pressure in the fuel power supply system must be controlled with a pressure gauge. If the reading is zero, obviously the pump is dead. You can also check the car safety panel. A security of the burnt fuel pump is another probable symptom of a defective pump.
• Foreign noise
• The engine loses energy when accelerated – acceleration requires a lot of fuel, forcing the pump to work more. If the pump produces, it is possible that it cannot keep up with this greater question, exhaustion of the engine. In addition, a vehicle’s power loss can occur and if a fuel filter is clogged, in which case it must be clean or replaced.
• When the load is designed, the engine loses power: when climbing a slope or towed a load, the need for fuel increases by increasing the load of the pump. If the pump is worn, it no longer maintains the constant fuel flow to the engine, with consequent loss of power.
• The car moves at high speed (at high speed the engine is rinsed) – this happens when the petrol pump cannot guarantee a regular flow of gas to the engine. In the initial phase of the defective operation of the petrol pump, this symptom can request a minute, so it returns to normal. Some drivers confuse this malfunction with the possibility of a dirty petrol, but the current fuel standards make the petrol pump a more probable cause.

Since the mechanical pumps are managed directly from the engine movement and have few parts in motion, they are generally reliable and easy to diagnose. The problems that occur in this type of pumps are related to the deteriorated diaphragm.

Electronic pumps are related to electronic control systems and contain several mobile parts. Because of this greater complexity, these types of pumps are more prone to defects.

2. What is a petrol pump?

A petrol pump is a device that moves fuel from the engine tank, feeding it under constant pressure for its optimal operation. Depending on the age of the car, there are mechanical or electronic petrol pumps.

3. What are the most common symptoms of a car petrol pump?

One of the first most common symptoms of a defective fuel pump is the production of a powerful sound when starting the engine. This sound is described by some drivers as similar to the whistle of a boiling ship with a warning sign. Others describe it as similar to grinding. Regardless of the type of sound emitted by the fuel pump, it is very important that the car is controlled in time by a specialist. The pump will continue to work for a short period of time after the appearance of these sounds.

Another common symptom would be the low fuel pressure in the fuel tube. The pressure is generated by the pump, as long as it works.

4. What are the most common causes/situations in which a cars petrol pump can be damaged?

The most common causes/situations in which the petrol pump can be damaged are:

• CASOLOL of lower quality – a dirty or impurities fuel can clog the fuel found in the tank of each car, regardless of the country or the year of production. The filter is a synthetic or metal shirt, installed in the search directly on the fuel pump and, in the case of a distance pump, is on the suction neck in the tank.
• The clogged coarse filter: a clogged filter is brown, since the filter cells are completely clogged with deposits. It is recommended to change it every 20,000 km. But once it is sufficient to feed on petrol with impurities and will obstruct.
• Failure to respect the operating rules at the top of the defects, the petrol pump is in 2nd place. A pump foreseen to work in a certain pressure area, is forced to function at maximum pressure, which is not allowed for this, since the filter clogged with mechanical particles does not allow the flow of fuel required for the engine.
• The small amount of gasoline in the tank – can overheat the electronic fuel pump, which is why it is preferable not to circulate «red».
• Lack of electrical petrol pump power supply – the reason can be oxidized thermal contacts. Using a 12 -volt tester or light bulb, it is possible to check the petrol pump supply circuit.
• The gradual contamination of the additional higher filter leads to premature defects.
• Installation of Chinese filters (Taiwanesi) with a low quality filter element
• The tube bypass turned on the defective bypass relay (old models) (to modern cars).

5. Tips to avoid the defect of the petrol pump and what a driver has to do if he realizes that the petrol pump has been damaged.

• A way to extend the duration of the duration of the petrol pump is to maintain a certain minimum level of petrol in the tank, recommended at least a quarter of the volume of the fuel tank.
• Clean the electrical panel before the cold season (all contacts will be cleaned with a special spray).
• At 70,000 km or when changing the distribution, it is recommended to wash the residual tank and at the same time the float blades.
• Avoid «up to the fool», because the engine, consuming all the gasoline from the tank, will pull all the residues, clogging the pump.

6. Test the petrol pump

The problems relating to the start and arrest of the engine are not always related to the petrol pump. Sometimes, the signs of the petrol pump defect are the same as when the fuel pressure regulator, injectors or nozzles, candles and high voltage wiring are defective. Even expert specialists, who know all the signs of a defective pump, cannot unusually determine the type and cause of the defect at first sight and it is necessary to control one by one all potentially defective components.

The following steps must be followed to test the petrol pump:

Step 1. Safety control from the safety panel.

Take a step. Make sure the terminals are not oxidized.

Step 3. Food control – It is performed with a multimeter. The wells of the measuring device in the «Voltmeter» mode (from 0-20 Volt) must be connected to the fuel pump supply terminals.

Step 4. Control of the coarse filter.

Step 5

Step 6. Control of the withholding valve – consists in measuring the pressure with a pressure gauge. The pressure indicators must not exceed 3 bars and when the engine interrupts the pressure must decrease suddenly.

The simplest option: you can opt for control with a specific tester for the automotive brand.